feat(server): custom library scanning interval (#4390)

* add automatic library scan config options

* add validation

* open api

* use CronJob instead of cron-validator

* fix tests

* catch potential error of the library scan initialization

* better description for input field

* move library scan job initialization to server app service

* fix tests

* add comments to all parameters of cronjob contructor

* make scan a child of a more general library object

* open api

* chore: cleanup

* move cronjob handling to job repoistory

* web: select for common cron expressions

* fix open api

* fix tests

* put scanning settings in nested accordion

* fix system config validation

* refactor, tests

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

web/src/routes/admin/system-settings/+page.svelte

@@ -20,6 +20,7 @@
   import Icon from '$lib/components/elements/icon.svelte';
   import type { PageData } from './$types';
   import NewVersionCheckSettings from '$lib/components/admin-page/settings/new-version-check-settings/new-version-check-settings.svelte';
+  import LibrarySettings from '$lib/components/admin-page/settings/library-settings/library-settings.svelte';
   import { mdiAlert, mdiContentCopy, mdiDownload } from '@mdi/js';
 
   export let data: PageData;
@@ -69,6 +70,10 @@
         <JobSettings disabled={$featureFlags.configFile} jobConfig={configs.job} />
       </SettingAccordion>
 
+      <SettingAccordion title="Library" subtitle="Manage library settings">
+        <LibrarySettings disabled={$featureFlags.configFile} libraryConfig={configs.library} />
+      </SettingAccordion>
+
       <SettingAccordion title="Machine Learning Settings" subtitle="Manage machine learning features and settings">
         <MachineLearningSettings disabled={$featureFlags.configFile} machineLearningConfig={configs.machineLearning} />
       </SettingAccordion>